1

First president to live in the White House

Image: Raymond M.E. Aguirre

In 1790, President George Washington signed an act of Congress declaring that the government would reside in a district "not exceeding ten miles square […] on the river Potomac." Today, we all know what stands at 1600 Pennsylvania Avenue NW in Washington, DC. That's right! We're talking about the White House, an enduring symbol of the US presidency.

But it hasn't always been that way. The construction of the White House began in 1792 and only had its first resident 8 years later. He was President John Adams, who moved into the Executive Mansion with his wife Abigail in 1800.

2

First president with telephone in Office

Image: Carlos Eduardo

Nowadays, many of us can’t imagine getting anywhere without our cell phones. But in the 19th century, things were entirely different.

The landline telephone arrived at 1600 Pennsylvania Avenue in the late 1870s, during the presidency of Rutherford B. Hayes, shortly after Alexander Graham Bell had unveiled the communication device. It's said that President Hayes was interested in the technology and recognized its potential.

However, because the invention was so new, calls from the White House were rare. The first president to use the telephone frequently and regularly is considered to be William McKinley, who took office in 1897.

3

First president to serve two non-consecutive terms

Image: Josh Carter

Several men have had the honor of serving as president of the United States on more than one occasion, starting with none other than George Washington. Thomas Jefferson, James Madison, and others have served two consecutive terms.

But there was someone who, for the first time, served two non-consecutive terms as president: Grover Cleveland. That's right, Cleveland first took office in 1885 after defeating Republican candidate James G. Blaine in the election. In 1888, he lost the presidency to Benjamin Harrison. However, in 1892, Cleveland won again, assuming his second mandate in 1893.

4

First president to win the Nobel Peace Prize

Image: Sunguk Kim

Winning a Nobel Peace Prize is not something that happens every day, right? Fortunately, four US presidents have achieved this remarkable recognition.

The first was Theodore Roosevelt, who received the Nobel Peace Prize in 1906 for his role in negotiating the end of the Russo-Japanese War. The other three presidents who received the Nobel were Woodrow Wilson, Jimmy Carter (who was awarded the prize after leaving office), and Barack Obama.

5

First president born in the 20th century

Image: Florida Memory

The turn of the century is always a momentous and exciting event, and the first decades of the last century were quite... shall we say, "busy." The first president to serve during the 20th century was William McKinley, who was already in office at the turn of the century. But here’s a different question: who was the first future president born in the 20th century?

We're referring to none other than John F. Kennedy, who was born on May 29, 1917, in Brookline, Massachusetts. At the age of 29, he won a seat in the House of Representatives, and six years later, he secured a position in the Senate.

Finally, in 1961, JFK was inaugurated as the 35th president of the United States.

6

First president to light the National Christmas Tree

Image: Gaby Dyson

The lighting of the National Christmas Tree by the president of the country has become a cherished tradition that beautifully reflects the American Christmas spirit.

This tradition began on December 24, 1923, when President Calvin Coolidge became the first to light the National Christmas Tree located at the Ellipse near the White House. The imposing tree stood 48 feet tall and was decorated with over 2,500 electric lights. Beautiful!

Fortunately, the presidents who followed Coolidge have continued this delightful Christmas custom, keeping the tradition alive for generations to enjoy.

7

First president on TV

Image: Yle Archives

In the 1930s, it wasn't common to see the president's face on TV. In fact, before 1939, no president had ever appeared on television while in office.

The first American president on TV was Franklin D. Roosevelt, who made his television debut on April 30, 1939, at the New York World's Fair. Although this might not seem so revolutionary today, at the time, it marked a turning point in political communication and how leaders connected with citizens. His speech is remembered for addressing important issues, such as the future of the nation and the world.

8

First president on color TV

Image: Aleks Dorohovich

Yes, Franklin D. Roosevelt was the first US president to appear on TV, but Dwight D. Eisenhower was the first sitting US president who was lucky enough to appear on color television!

This detail, which seems trivial today, was a radical change at the time. When color TV arose, everything people watched on their living room screens began to better reflect the reality outside. Eisenhower made his color TV debut during the 1950s , delivering a speech as part of his re-election campaign—a moment that symbolized the merging of politics and modern technology.

9

First president to visit all 50 states

Image: David Lusvardi

We know that the United States of America is a big country. In fact, we're one of the largest countries in the world in terms of territory. For this reason, it can be a challenge to get to visit all 50 states that make up our nation in a short period of time. However, one president managed to accomplish this feat for the first time.

The president who achieved this milestone was Richard Nixon, the 37th president (1969-1974), when he visited Maine on October 22, 1972, marking the completion of his goal.

It’s worth noting, in fairness to all previous presidents, that Hawaii and Alaska didn’t become states until 1959.

10

First president on the internet

Image: Anthony Massaro

Although the origins of the Internet can be traced back to the 1960s, it wasn’t until the late 1980s that it became a widely popular and accessible phenomenon.

In line with global technological advances, the White House decided to incorporate the use of the Internet during the presidency of Bill Clinton, who officially became the first president to use the Internet for work purposes while in office.

But that wasn't all! Clinton also hosted an event that seemed unimaginable before —he organized a live chat from the White House. With that, Clinton was establishing the first direct communication between a US president and the public through the Internet.

1

What are bills made of?

Unlike other currencies, dollar bills are not made of paper or plastic. U.S. dollar bills are made from a special fabric blend composed of 75% cotton and 25% linen. This mix makes the bills extremely durable and resistant, and they can be folded about 4000 times before tearing.

2

What bills are valid?

Any U.S. dollar bill that was legally printed is valid, no matter how old, as American currency does not have an expiration date. While some bills might not be accepted by businesses of foreign exchange services due to their condition or if they are a discontinued version of the bill, the bills themselves are still valid, and American banks will accept them, though they might take them out of circulation.

3

American leaders

Five bills have a depiction of an American president. The exceptions are the $10 bill, with Alexander Hamilton on the front, and the $100 bill, with Benjamin Franklin. The $1 bill, depicting George Washington, is extremely symbolic: several elements are repeated 13 times as a nod to the thirteen colonies, and it showcases the Bald Eagle and the Eye of Providence as a sign of God watching over America.

4

A change in size

Did you know that dollar bills used to be so big that they were nicknamed "horse blankets"? Original dollar bills were 7.4 × 3.1 inches. In 1929, the Treasury Department reduced the size of bills to 6.14 × 2.61 inches to reduce production costs and materials. Old bills, though still valid, are worth much more as collector items.

5

Uniformity

Besides their value and design, all dollar bills have the same size (6.14 × 2.61 inches), color, and weight (1 gram) , which sets American currency apart from other countries where bills of different values are differentiated by size, color, or both. Why doesn’t the U.S. implement differences among bills? The cost of adapting vending machines, bank drawers, and ATMs to new bill sizes would cost billions of dollars.

6

Hard to copy

Originally, dollars were not green, but black. As time passed, green ink was favored, as it was cheap and did not fade as much as black. The new color also prevented people from using black-and-white cameras to create counterfeit money. Currently, dollar bills are predominantly green, but newer versions also include extra colors, such as pink, orange, or purple.

7

A $100,000 bill?

Have you ever seen a $500 or 1,000 dollar bill? What about a $100,000? Up until 1945, the U.S. Treasury printed $500, $1,000, $5,000, $10,000, and $100,000 notes , in addition to the values currently in use. These higher-value notes were mainly intended for bank and government use, but were sought by criminals as they made it easier to hide large amounts of money. Even though they were officially discontinued in 1969, these notes are still valid, though rare, and they have a high worth as collector's items.

8

No numbers

Unlike bills, American coins have different sizes and colors related to their value. Originally, gold, silver, and copper were used for coins, but modern coins are made of copper, zinc, or nickel. Besides their size and design, the value of each coin is printed in letters, not in numbers , alongside depictions of American presidents.

9

Liberty for all (the coins)

By law, all American coins must include six specific details : the word ‘Liberty’, the name of our country, the national motto "In God We Trust", the oldest American motto "E Pluribus Unum", the value of the coin, and the year. Each coin also includes a mint mark that shows where it was made: "P" for Philadelphia, "D" for Denver, "S" for San Francisco, and "W" for West Point.

10

A global currency

The American dollar is one of the most powerful currencies in the world, acting as a backbone for international trade and finances. It is estimated that two-thirds of the physical dollars in circulation are outside American territory. Besides the U.S. and its territories, eight sovereign nations have the U.S. dollar as their official currency, with several more accepting it as legal tender.

1

There's an unexplained billion-year gap

Look closely at the canyon walls, and you'll notice something strange: a clean, sharp line where ancient rock simply stops, and a much younger layer begins directly above it.

This geological puzzle is called the "Great Unconformity," and it represents over a billion years of rock layers that are simply absent , as though that stretch of time never happened. In some spots, rock dated 1.8 billion years old sits directly beneath rock that is only 520 million years old. Where did the missing billion years go?

The leading theory involves the violent breakup of an ancient supercontinent, but scientists are still piecing it together.

2

During the Cold War, it hid a nuclear fallout shelter

During the Cuban Missile Crisis in 1962, the U.S. government converted part of the Grand Canyon Caverns into a fallout shelter. This dry cave system, more than 200 feet underground, was stocked with enough food and water to sustain 2,000 people. Naturally, it was never occupied, and the supplies were never used.

The caverns have since been transformed into a tourist attraction, with organized tours winding through the same underground chambers that were once intended as a refuge from nuclear war. You can even book a night's stay there.

3

The Federal Aviation Administration was founded after a crash over the canyon

In 1956, two commercial passenger planes collided in midair over the eastern Grand Canyon, killing all 128 people on board both crafts. Rescue teams struggled to reach the wreckage deep inside the canyon, and the extreme heat of the crash had caused the planes' aluminum to fuse with the bedrock. There were no survivors.

The disaster exposed a terrifying truth: the U.S. air traffic control system was dangerously outdated, relying on pilots' visual estimates and rough guesswork from controllers , with no way to separate fast-moving aircraft from slow ones, or instrument-flying planes from those navigating by sight. Congress responded by passing legislation that created both the Federal Aviation Administration (FAA) and the National Transportation Safety Board.

4

A hoax suggested that an Egyptian civilization had lived there

In 1909, the Arizona Gazette reported that an explorer named G. E. Kinkaid had discovered a vast underground citadel inside the canyon, filled with artifacts linked to ancient Egyptian civilization. He even claimed the expedition had been funded by the Smithsonian.

This story described hieroglyphics on the walls, mummies in the chambers, and relics pointing to a direct connection with the Egypt of the pharaohs. It was incredibly detailed, and it was, of course, a hoax. No evidence for any of Kinkaid's claims ever surfaced.

5

Fewer than 100 people have ever hiked its full length

Among the few people who have completed the through-hike of the Grand Canyon is Jen Hogan, the first woman to accomplish it, finishing her journey in 2021–2022.

It’s a full 800-mile length below the rim. The route involves extreme heat, flash floods, near-impassable areas, and stretches with no water or trail whatsoever. Around 60 or 70 people have reportedly accomplished it. This makes it one of the most exclusive feats on Earth.

6

The Grand Canyon's rocks predate dinosaurs entirely

Visitors scanning the canyon walls for fossils are often surprised to learn they won't find any dinosaur bones here. The rock layers of the Grand Canyon are simply older than dinosaurs. This fact alone can be shocking: staring at its walls means staring at marine fossils from as far back as 1.2 billion years ago. Some of its caves hold the remains of ancient mammals. The canyon is a window into a world that existed long before the dinosaurs, when the land that is now Arizona lay beneath a shallow sea.

7

The park is bigger than Rhode Island

Numbers alone rarely capture the Grand Canyon's scale, so here's a different approach. Rhode Island covers about 1,214 square miles, and the Grand Canyon National Park spans 1,904 square miles.

The canyon's depth exceeds four Empire State Buildings (which is 1,454 feet) stacked on top of one another. That’s 6,093 feet at its deepest point.

8

But it's not the deepest canyon on Earth

For all its grandeur, the Grand Canyon does not hold the depth record. Pictured above, the Yarlung Tsangpo Grand Canyon in Tibet, China, plunges to 17,567 feet, which is nearly three times deeper. Carved by the Yarlung Tsangpo River as it cuts through the eastern Himalayas, that canyon is so remote and extreme that it remained largely uncharted until the late 20th century.

9

It is home to a pink rattlesnake found nowhere else on Earth

The Grand Canyon Pink Rattlesnake has a pinkish-red coloring that matches the canyon's own distinctive rock walls so closely that it's nearly invisible. It is found nowhere else in the world. Officially classified as Crotalus oreganus abyssus , it has darker diamond-shaped markings along its back that deepen the camouflage further.

10

There's a village at the bottom: Supai Village

For over 1,000 years, the remote village of Supai has been home to the Havasupai Tribe, the People of the Blue-Green Waters. It is located an eight-mile hike from the rim, but sits roughly 3,000 feet deep inside the Grand Canyon.

The U.S. Department of Agriculture has called it the most remote community in the contiguous United States, and it has no automobiles and no road access. The only ways in are on foot, by mule, or by helicopter. It is also the only place in the United States where the postal service still delivers mail by mule train.